Which of the following is NOT one of the six elements of Call for Fire?

The correct choice indicates that "Target velocity" is not one of the six elements of Call for Fire. In the Call for Fire process, the six key components are designed to ensure effective communication and coordination between the observer and the supporting fire units.

Observer identification is a critical component as it establishes who is calling for the fire and ensures that the fire unit can confirm the observer's identity and authorization to request fire. The warning order provides immediate instructions to the fire unit that a call for fire is imminent, helping prepare them to quickly react when the full request is made. The method of fire and control specifies how the fire will be delivered, including whether it will be a danger close mission or if collateral damage is a concern.

Target velocity does not fit into these six elements. Although understanding the dynamics of a target may be important in certain fire missions, it does not pertain to the standard elements of the Call for Fire, which focus on communication strategy and procedures for delivering accurate indirect fire support.